CN203309437U - Novel polytetrafluoroethylene expansion joint - Google Patents
Novel polytetrafluoroethylene expansion joint Download PDFInfo
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- CN203309437U CN203309437U CN2013203240031U CN201320324003U CN203309437U CN 203309437 U CN203309437 U CN 203309437U CN 2013203240031 U CN2013203240031 U CN 2013203240031U CN 201320324003 U CN201320324003 U CN 201320324003U CN 203309437 U CN203309437 U CN 203309437U
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- expansion joint
- polytetrafluoroethylene
- pipe
- novel
- inner pipe
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Abstract
The utility model relates to the technical field of expansion joints, in particular to a novel polytetrafluoroethylene expansion joint, comprising an inner pipe and a corrugated pipe arranged outside the inner pipe; a PTFE (polytetrafluoroethylene) line pipe is arranged between the inner pipe and the corrugated pipe; two ends of the corrugated pipe are provided with connection flanges connected by a pull rod; and the end parts of the pull rod are connected with the connection flanges by limiting nuts. By adopting the structure, the novel polytetrafluoroethylene expansion joint has the characteristics of reasonable structure, advanced process, high standard degree, good universality, strong interchangeability, aging resistance, reliable sealing, long service life and the like; and meanwhile, when being used in pipeline systems with strong anti-corrosion and higher pressure properties, the novel polytetrafluoroethylene expansion joint better solves the difficult problems of displacement and mounting deviation caused by thermal expansion and cold retraction, and is widely applied to the pipeline systems of departments of chemical industry, metallurgy and nuclear energy.
Description
Technical field
The utility model relates to the expansion joint technical field, is specifically related to the teflon expansion joint.
Background technique
Nowadays, the additional stress that expansion joint causes because of temperature difference and mechanical vibration for compensation, and be arranged on a kind of flexible structure on container shell or pipeline.As a kind of elastic compensating element that can free-extension, the advantages such as reliable operation, functional, compact structure, be widely used in the departments such as chemical industry, metallurgy, nuclear energy due to it.But the expansion joint of prior art is because design is reasonable not, its corrosion-resistant, ageing resistance are poor, and it is unreliable seal, and very easily occur because of the problem of generation displacement and installation deviation of expanding with heat and contract with cold, thereby have reduced usability and working life.
Summary of the invention
The purpose of this utility model is to provide that a kind of reasonable in design, corrosion resistance is strong, long service life, can efficiently solve the teflon expansion joint because of expand with heat and contract with cold generation displacement and installation deviation problem.
In order to solve the existing problem of background technique, the utility model is by the following technical solutions: the teflon expansion joint, comprise inner tube and the bellows of being located at described inner tube outside, between described inner tube and bellows, be provided with the PTFE bushing pipe, the two ends of described bellows are provided with adpting flange, the adpting flange at described two ends is connected by pull bar, and the end of described pull bar is connected with adpting flange by stop nut.
Further, described inner tube and bellows are metal tube.
The utlity model has following beneficial effect: teflon expansion joint described in the utility model, mainly comprise inner tube, be located at the bellows of inner tube outside, wherein, between inner tube and bellows, be provided with the PTFE bushing pipe; The utility model adopts said structure, have rational in infrastructure, the characteristics such as technique is advanced, standardization level is high, versatility is good, interchangeability is strong, anti-aging, sealing is reliable, long service life, simultaneously, in the pipe-line system having stronger corrosion-resistant and elevated pressures, thereby solved well a difficult problem that produces displacement and installation deviation because expanding with heat and contract with cold, be widely used in the pipe-line system of the departments such as chemical industry, metallurgy, nuclear energy.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, the teflon expansion joint, comprise inner tube 1 and the bellows 2 of being located at described inner tube 1 outside, between described inner tube 1 and bellows 2, be provided with PTFE bushing pipe 3, the two ends of described bellows 2 are provided with adpting flange 4, the adpting flange 4 at described two ends is connected by pull bar 5, and the end of described pull bar 5 is connected with adpting flange 4 by stop nut 6; Wherein, described inner tube 1 and bellows 2 are metal tube.In the present embodiment, due to the PTFE(teflon) bushing pipe is owing to having stronger corrosion-resistant, high pressure resistant and resistance to high temperature, thereby its ageing resistance is strong, sealing is reliable, effectively improve usability and the working life of product, and solved a difficult problem that produces displacement and installation deviation because expanding with heat and contract with cold.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. teflon expansion joint, it is characterized in that, comprise inner tube (1) and be located at the outside bellows (2) of described inner tube (1), between described inner tube (1) and bellows (2), be provided with PTFE bushing pipe (3), the two ends of described bellows (2) are provided with adpting flange (4), the adpting flange at described two ends (4) is connected by pull bar (5), and the end of described pull bar (5) is connected with adpting flange (4) by stop nut (6).
2. teflon expansion joint according to claim 1, is characterized in that, described inner tube (1) and bellows (2) are metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203240031U CN203309437U (en) | 2013-06-06 | 2013-06-06 | Novel polytetrafluoroethylene expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203240031U CN203309437U (en) | 2013-06-06 | 2013-06-06 | Novel polytetrafluoroethylene expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309437U true CN203309437U (en) | 2013-11-27 |
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ID=49615646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203240031U Expired - Fee Related CN203309437U (en) | 2013-06-06 | 2013-06-06 | Novel polytetrafluoroethylene expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309437U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398260A (en) * | 2013-06-06 | 2013-11-20 | 江苏鑫晟波纹管有限公司 | Novel polytetrafluoroethylene expansion joint |
| CN103851295A (en) * | 2014-03-21 | 2014-06-11 | 江苏星光波纹管有限公司 | Expansion joint special for gas pipeline |
| CN104089420A (en) * | 2014-07-01 | 2014-10-08 | 江苏大力城电气有限公司 | Bellow expansion joint special for solar heat collecting tube |
| CN104132213A (en) * | 2014-07-01 | 2014-11-05 | 江苏大力城电气有限公司 | Novel bellow expansion joint |
-
2013
- 2013-06-06 CN CN2013203240031U patent/CN203309437U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398260A (en) * | 2013-06-06 | 2013-11-20 | 江苏鑫晟波纹管有限公司 | Novel polytetrafluoroethylene expansion joint |
| CN103851295A (en) * | 2014-03-21 | 2014-06-11 | 江苏星光波纹管有限公司 | Expansion joint special for gas pipeline |
| CN104089420A (en) * | 2014-07-01 | 2014-10-08 | 江苏大力城电气有限公司 | Bellow expansion joint special for solar heat collecting tube |
| CN104132213A (en) * | 2014-07-01 | 2014-11-05 | 江苏大力城电气有限公司 | Novel bellow expansion joint |
| CN104089420B (en) * | 2014-07-01 | 2016-04-13 | 江苏大力城电气有限公司 | The special expansion bellow of a kind of solar energy heat collection pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140606 |